Malicious PDF — malware analysis report

Static analysis result for SHA-256 3770f53d417ca4dd…

MALICIOUS

PDF

73.5 KB Created: 2021-02-18 23:02:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 559a84783aa1116d4593403e5f365817 SHA-1: f8ae9ac702895b6a76da7d9faa6faad7c2bc3424 SHA-256: 3770f53d417ca4dda6fea9f589469ed2e5ad47d5072c736d9db7b09b3925a213
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/aws?utm_term=programming+for+beginners+book+pdf PDF link annotation
    • https://cdn.sqhk.co/zovitamojim/eibXznS/58298994625.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/gjedEBm/yeet_cannon_review.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/g4NMEaI/rupubozafurewipiva.pdfIn PDF document text
    • http://vurenosul.22web.org/amman_devotional_songs_masstamilan.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/Kgdkgea/puvupasodev.pdfIn PDF document text
    • https://cdn.sqhk.co/tavanaru/j57MheY/wokolosavuresu.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/wvEijy2/putanisumasevazopotatuga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tinezedu/kuwoxuviwowejofonisatu.pdfIn PDF document text
    • http://wikevutu.epizy.com/children_s_day_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/mobogenie_1030_apk_free.pdfIn PDF document text
    • http://wupubobetob.epizy.com/battlefield_bad_company_2_trainer.pdfIn PDF document text
    • http://fitatina.rf.gd/bter_examination_form_date_2019.pdfIn PDF document text
    • http://padanejelupe.rf.gd/23665584942.pdfIn PDF document text
    • http://babevuzax.epizy.com/gimutanamux.pdfIn PDF document text
    • http://zufomemibuji.rf.gd/camarilla_pivot_calculator.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e26b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26B 5536 bytes
SHA-256: 8250c18f3861e3e42a9acb86622039ef6c5e4bb5d70638719490433b04d6dd47
font_01_sfnt_off0000f527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF527 10552 bytes
SHA-256: 653088393429fd9dd9b1b016057bd34da094868e4d8ed3fee9a3340942e103c9